CESL has developed hydrometallurgical processes for the production of copper and nickel cathode from their respective concentrates, the economic recovery of gold and silver from the residues, and the removal of copper from molybdenum.
CESL, one of Teck's technology centres, oversees the development of our proprietary hydrometallurgical technology. Based in Richmond, British Columbia, CESL offers a method for treating copper, copper-gold, nickel-copper, and nickel concentrates, especially those with complex challenges related to mineralogy and deleterious elements that inhibit conventional production and sale of concentrates.
CESL has developed a process for treating high arsenic bearing copper-sulphide resources from mine-to-metal while producing non-hazardous arsenic bearing residues.
The first commercial hydrometallurgical facility using CESL Technology was constructed by Vale in the Carajás region of Brazil in 2008.
CESL’s facilities have a substantial amount of hydrometallurgical equipment for the testing of various processes and flowsheets, including grinding, flotation, pressure leaching, solvent extraction, gravity concentration and electrowinning. In addition to equipment, CESL has its own analytical laboratory to support testing programs, an on-site maintenance and instrumentation team, and a robust safety program.
Recent Publications Copper - Arsenic
Teck CESL Receives Grant for Sustainable Refining Technology 0.16 MB
A Sustainable Hydrometallurgical Process to Develop Copper Deposits Challenged with High Arsenic 1.61 MB
Arsenic Stability and Characterization of CESL Process Residues 0.60 MB
An Integrated Mine to Metal Approach to Develop High Arsenic Copper Deposits Using the CESL Process 0.62 MB
Unlocking Value in Copper Arsenic Sulphide Resources with Copper-Arsenic CESL Technology 0.44 MB
Developing Copper Arsenic Resources with CESL Technology – Com 2014 0.41 MB
Environmental Benefits of the CESL Process for the Treatment of High-Arsenic Copper-Gold Concentrates – Hydroprocess 2017 0.51 MB
Hydrometallurgical Considerations in Processing Arsenic-Rich Copper Concentrates – Hydroprocess 2015 0.55 MB
Scorodite in the CESL Process for Copper-Arsenic Concentrates – Com 2016 0.45 MB
Tackling Impurities in Copper Concentrates – ALTA 2015 0.63 MB
Utilizing Cyanide Recovery Techniques in the CESL Gold-Silver Process – Alta 2017 1.29 MB
Recent Publications Copper
Pyrite Leaching Behaviour under CESL Process Conditions 0.30 MB
Reducing Fresh Water Use in the Production of Metals 0.72 MB
Teck’s CESL Copper Process: A Commercial Ready Concentrate Leach Alternative 0.41 MB
Corrosion Studies at Teck’s Hydrometallurgical Facility (CESL): Identification of an Alloy Substitute for Titanium in Certain Applications 0.37 MB
Early Copper Product Results from Vale’s Hydrometallurgical CESL Refinery 3.95 MB
Commissioning UHC: A Vale Copper Refinery Based on CESL Technology 2.01 MB
The Role of Iron in the CESL Process 0.34 MB
On-Site Processing vs. Sale of Copper Concentrates 0.13 MB
CESL Copper Process—An Economic Alternative to Smelting 0.24 MB
CESL Copper Process—Moving From Pilot Plant to Production Scale Operation 0.23 MB
Recent Publications Nickel
Teck's CESL Nickel Process Advancing Towards a Commercial Ready Hydromet Solution for Low Grade Disseminated Nickel Sulphides 0.41 MB
Unlocking Disseminated Nickel Sulphides using the CESL Nickel Process 0.24 MB
A New Process for Cobalt - Nickel Separation 0.23 MB
Nickel and Cobalt Recovery from a Bulk Copper-Nickel Concentrate Using the CESL Process 0.41 MB
Nickel and Cobalt Recovery from Mesaba Concentrate 0.94 MB
The Application of the CESL Nickel Process to Laterites 0.10 MB